Muzzleloader Dry Box As all Muzzleloaders know, black powder and powder substitutes must be stored in a controlled environment to protect them from moisture. That is why MTM designed the new MuzzleLoader Dry Box - it is the ideal possible bag - box for active muzzle loading black powder enthusiasts. No matter what the weather, the ML-1's roomy base interior shuts out moisture problems with a tight, weather resistant, O-ring seal. A large lift out tray helps to organize gear keeping smaller items on top, not crushed or buried at the bottom. The 80% usable top access lid compartment divides specialty tools into five sections for quick retrieval at the range. Thick side-wall construction, a heavy-duty latch and padlock tabs assure a secure barrier against uninvited guests. Just the ticket for the active muzzle loader.